Dremel 3D40 Idea Builder User manual

Read the Dremel 3D40 manual and these
instructions before replacing the level-
ing servo motor in your Dremel 3D40. Failure to comply
with the warnings and instructions may result in fire,
equipment damage, property damage, or personal injury.
Always unplug Dremel 3D40 from its power before per-
forming any service procedures. Failure to do so may re-
sult in personal injury and equipment damage.
Use only Dremel approved materials and components.
Use of object materials, or 3D objects other than Dremel ap-
proved object materials and genuine Dremel components
may void warranty.
Repairs on the Dremel 3D40 may require the use of special
tools (pulling devices and bearing press). Authorized repair
centers have trained repair technicians and equipment nec-
essary to perform these repairs.
For the location of the repair center near you, please call 1-
844-4DR L3D (1-844-437-6533) onday thru Friday, 8A
to 6P CST. Or, look on our web site at www.Dremel3D.com
and follow the link for ‘Support’.
Dremel 3D40 – Replacing the
leveling servo motor assembly
WARNING
!
SERVICE
CON INEN AL UNI ED S A ES CANADA
Dremel Service Center
4915 21st Street
Racine, WI 53406
Phone: 1-844-4DR L3D
Giles Tool Agency
47 Granger Ave,
Scarborough, ON
1K 3K9, Canada
Phone:[phone]
West Coast Tool
4008 yrtle Street
Burnaby, B.C. V5C 4G2
Phone: [phone]
Use proper anti-static precautions when
performing this replacement. Discharge
static electricity before beginning. Work on a static-free sur-
face.
This document will outline the steps necessary to replace a
defective or damaged leveling assembly. This includes the
leveling switch, servo motor, and mounting bracket.
Figure 1: Replacement levelling servo motor assembly
ools Required:
• 2mm Hex wrench (Allen key)
• T10 Torx (star) screwdriver bit
• Scissors
Step 1: Bring Printer to Safe State for Service
1. Turn on the printer, and verify that the temperature icon
reads cool (blue). If it is not blue, allow adequate time for
the nozzle to cool until the icon reads blue.
Figure 2: Home Screen (see encircled nozzle temperature)
2. Turn off the printer.
3. Unplug the printer.
CAU ION
!

Step 2: Remove op Cover of Extruder
1.Cut the filament just before the intake on the top of the
extruder.
Figure 3
2. Unscrew the two screws on the top of the filament guide
bracket.
Figure 4: Extruder cover removal
3. Remove the top cover.
4. Carefully unplug filament runout switch from the extruder
circuit board, ensuring to pull from the plastic plug and not
the wires; pulling the wires can damage the connection to
the extruder.
Figure 5: Runout switch connector being disconnected
from extruder PCBA
Step 3: Removing the Shielded Circuit Cable
1.Using the 2 black push pins (top encircled yellow, bottom
hidden) of the shielded circuit ribbon cable, push down to
release it from the circuit board.
Figure 6: Disconnect shielded circuit ribbon cable
from extruder PCBA
2. Remove the connector from the circuit board and pull up
on the cable. Always use great care when handling a
shielded circuit cable.
Figure 7: Removal of ribbon cable from extruder housing
3. Set aside the cable within the machine, making sure there
are no sharp kinks or turns produced.
2

3
Step 4: Remove the Leveling Servo Assembly
1.Remove the three screws holding the servo motor bracket
in place with a T10 Torx (star) bit.
Figure 8: Unscrew servo motor levelling switch chassis
2. Get a visual understanding of how the levelling arm is
located and oriented in the assembly (see picture below)
and then pull the servo motor assembly vertically upwards
away from the extruder.
Figure 9: Take note of how levelling switch is located
and oriented before chassis removal.
Step 5: Disconnect the Extruder Circuit Board
1. Disconnect the leveling switch (black and red wires) and
servo motor (red, brown, and yellow) from the extruder
circuit board. When removing these, always remove by the
plastic connectors. Never pull by the wires - this can
damage or break the connectors.
Figure 10: Disconnect encircled connectors
Step 6: Reassemble the Extruder
1.Replace the leveling servo assembly carefully by maneu-
vering the levelling arm through the extruder chassis.
2. Replace the three screws holding the servo motor chassis
in place as shown in Figure 8.
3.Reconnect both wire connectors to the extruder circuit
board as shown in Figure 10.
4. Loop the shielded circuit cable through the plastic guide
bracket. Refer Figure 7.
5. Press the black connector pins on the shielded ribbon
cables and align with the receptacle as shown in Figure 6.
Gently push the ribbon cable onto the receptacle and
release the black pins. An audible “click” should be heard
when it is reconnected.
6. Reconnect the filament runout switch from the extruder top
cover to the circuit board. Refer Figure 5.
7. Replace the top cover and the two screws attaching it to
the extruder. Refer Figure 4. PLEASE NOTE: After replac-
ing the top cover ensure that no wires are exposed out of
the extruder body. If any wires are exposed or hanging out,
the extruder top cover will need to be removed and re-
placed.
Step 7: Calibration
This step will outline how to calibrate the leveling arm and
the z-offset for the extruder. The new leveling arm does not
know where it is in rotation before calibration, so the following
instructions will calibrate it to the correct position.
1. With the printer turned off, insert the supplied USB stick
into the USB port on the front of your 3D40.
2. Turn on the printer and wait for the calibration screen to
appear.
3. The “level arm set: (1/2)” will show up on the screen. The
Up and Down orientations have + and - adjustment
buttons. The adjusted angle can be seen in the black box
between the + and – buttons.
a. Press “test” once to move the levelling arm down.
Figure 11: Levelling Arm visible after pressing “test”

4
b. Visually judge if the leveling arm is vertical. If not, press
+ to increase angle or – to decrease angle in front of
“down” as shown in Figure 12 below.
Figure 12
c. Press “test” twice to check the orientation after adjust-
ment in vertical position. If not satisfied with the orien-
tation of the arm, repeat step band cuntil desired
orientation is achieved in vertical position.
d. Press “test” once to move the arm in the stow position.
e. Visually judge if the leveling arm is exposed like it is
shown in Figure 13 below.
Figure 13
f. If yes, press - to decrease angle in front of “up” as
shown in Figure 14 below.
Figure 14
g. If the arm makes a hitting sound or rebounds back
while stowing, then it is stowing too high. In that case,
press + to increase angle of stowing in front of “up”.
The arm should be stowed as shown in the Figure 15
below, such that it doesn’t expose or rebound.
Figure 15
h. Once the angles are adjusted for both vertical and
stowing positions, press “next”.
4. Next screen, “z gap set: (2/2)” will guide in adjusting the
vertical gap (z gap) between the nozzle tip and the build
plate. The gap will be shown in the black box. Initially the
gap will always show 0 regardless of the true gap between
the nozzle and the build plate.
Figure 16: z gap set screen
a. Press the black box “0”. This will cause the machine to
check the present gap between the nozzle tip and build
plate.
b. Use the gage paper (0.15mm thick) provided and
check if it can slide in between nozzle tip and build
plate without putting any vertical force on it.
c. If the gage paper can’t enter the gap, press “increase
gap” once (to increase by 0.1mm) and then press the
black button to increase the gap.
d. Repeat step c until gage paper can slide in between
nozzle tip and build plate.
e. If the gage paper can enter easily and there is a big
gap, ignore steps cand d. Use the “decrease gap”
once (to reduce by 0.1mm) and then press black button
to decrease the gap.
f. Repeat step e until gage paper can slide in between
nozzle tip and build plate, but should be snug.
g. Once the gap is adjusted using the gage paper pro-
vided, press “finish” to end this adjustment program.
The machine will get out of the calibration procedure
and the LCD will display “Build On” and then the home
screen. The calibration procedure is complete.
h. Remove the USB stick.

Congratulations!
You are now ready to build. Build On.
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Step 8: est the Machine
1.Level the printer before moving forward – Navigate to the
leveling screen by pressing level on the home screen, and
following the instructions on screen.
2.Navigate to “Filament” and follow the on screen instruc-
tions to load filament.
3. Build the “Test Print” file on the machine to ensure the
3D40 printer is working correctly.
4.If prints are not adhering to the build plate, the z-axis offset
may need to be adjusted. If so, continue to step 9.
Step 9: Adjusting the Z-axis Offset
1.Navigate to the z-axis offset screen, following: Tools→Set-
tings→Z-Axis Offset.
2. Follow the on-screen instructions to either increase or
decrease the offset.
3.Always adjust the z axis offset once (0.1mm increments/
decrements) and test by repeating Step 8 above, before
making any further z axis offset adjustments.
Figure 17: Z-Axis Offset screen